NSA signal-surveillance success stories

These slides contain excerpts from an April 2013 National Security Agency presentation detailing signal surveillance techniques and successes. They reveal that the NSA and its British counterpart, Government Communications Headquarters (GCHQ), use a Google-specific tracking cookie to pinpoint targets for hacking.
Correction: An earlier version incorrectly stated the name of Government Communications Headquarters. NSA uses Google cookies to pinpoint targets for hacking